The F♭ Note

F♭ is a white key on the piano. It sounds at 329.63 Hz in octave 4.

F♭ on the piano

Press play to hear the note.

Key facts

On the keyboard
a white key on the piano.
Frequency (octave 4)
329.63 Hz
MIDI number (octave 4)
64
Also written as
E
In key signatures
The 7 flat in the order of flats.

F♭ and its enharmonic spellings

F♭ can also be written as E. These are enharmonic equivalents: the same pitch, the same key on the piano, a different name on the page. Which spelling is correct depends on the key and on how the note functions, not on the sound.

F♭ frequency in every octave

Frequencies for F♭ in scientific pitch notation, with A4 tuned to 440 Hz.

NoteMIDIFrequency
F♭12841.2 Hz
F♭24082.41 Hz
F♭352164.81 Hz
F♭464329.63 Hz
F♭576659.26 Hz
F♭6881318.51 Hz
F♭71002637.02 Hz

Chords on F♭

The most common chords built with F♭ as the root.

See every F♭ chord

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Chords, Scales & Progressions

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अक्सर पूछे जाने वाले प्रश्न

Where is F♭ on the piano?

F♭ is a white key on the piano.

What frequency is F♭4?

F♭4 sounds at 329.63 Hz with A4 tuned to 440 Hz.

What is another name for F♭?

F♭ can also be written as E. They are the same pitch spelled differently.